Come to think of it, that joke is probably a good mix of Ray Stevens and Lil Wayne.
http://www.youtube.com/watch?v=00ILfCzJiWQ
"Get your tongue outta my mouth, there ain't no tellin' where it's been."
and this entire song:
http://www.youtube.com/watch?v=4yS9gs_DWWU
Edited because I fucked up and posted the clean version!
Edited again: that's not the REAL one either. Crap.